package com.chapter.sample.juc.locks;

import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

class Ticket {
    private int number = 50;

    private Lock lock = new ReentrantLock();

    public void sale() {
        lock.lock();
        try {
            if (number > 0) {
                System.out.println(Thread.currentThread().getName() + "卖出去：" + (number--) + " 还剩下：" + number);
            }
        } finally {
            lock.unlock();
        }
    }
}
public class SaleTicketDemo {
    public static void main(String[] args) {
        Ticket ticket = new Ticket();
        new Thread(()->{for (int i = 0; i < 55; i++) {ticket.sale();}},"a").start();
        new Thread(()->{for (int i = 0; i < 55; i++) {ticket.sale();}},"b").start();
        new Thread(()->{for (int i = 0; i < 55; i++) {ticket.sale();}},"c").start();
        new Thread(()->{for (int i = 0; i < 55; i++) {ticket.sale();}},"d").start();
        new Thread(()->{for (int i = 0; i < 55; i++) {ticket.sale();}},"e").start();
    }
}


